Lewis Carroll coined this term for his epic poem. The "snide remark" definition almost surely amounts to long-after-the-fact faux etymology.

So a "snark tag" can mean either this:
[snark][/snark]

or evidence of a rabies-vaccinated or radio-collared snark?

Fictional character/Snide Remark

The Snark is the fictional monster
The Snark is the fictional monster that Lewis Carroll created in his nonsense poem The Hunting of the Snark. His descriptions of the creature were, in his own words, unimaginable, and he wanted that to remain so.

The origin of the word
Martin Gardner mentions several combinations of words that have been suggested to be at the origin of the name: snail and shark, snake and shark, snarl and bark etc. No support for any of this can be found in Lewis Carroll's writings.

What Lewis Carroll asked the children
Lewis Carroll was asked repeatedly to explain the Snark. Gardner gives us five examples that are on record. In all of them, Carroll's answer is that he doesn't know himself, that he can't explain, etc. His most interesting answer: ...Some children are puzzled with it. Of course you know what a Snark is? If you do, please tell me...
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From the wiktionary

snark (countable and uncountable; plural snarks)

1. (uncountable) Snide remarks.
2. (mathematics) A graph in which every node has three branches, and the edges cannot be coloured in fewer than four colours without two edges of the same colour meeting at a point.

Related terms

* snarkiness
* snarky
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